Hi there,
I'm trying to develop a trapezoidal-shaped channel in BlockMesh, consisting of 2 three-sided prism and in between a normal cuboid. In the attached PDF-file you can find a sketch of the geometry.
Below the blockMesh is posted.

My problem is that when I'm trying to define different number of cells in x and in y direction like for example:

The first Warning appears because of the removed walls, which are not really walls but rather edges. In a test with a single three-sided prism I found out that I have to define them.
The shifting of the numbers doesn't have any effect on the result.

The biggest problem is the inconsistent number of faces between the blocks. Still have no idea how to solve it.
Any proposals?
Regards,
pc1

Hi,
I did try your BlockMeshDict, but unfortunately BlockMesh aborted because of the inconsistent number of cells. Don't know why you don't have the same problem with the BlockMesh?
My CheckMesh also failed.

Is there an other possibility to define such a geometry in the BlockMeshDict?

Or does anyone else have some advice for me?
Tomorrow I'll continue searching for the reason of this error...